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Evidence of air-snow mercury exchange recorded in the snowpack at Dome Fuji, Antarctica

Cited 6 time in scopus
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Title
Evidence of air-snow mercury exchange recorded in the snowpack at Dome Fuji, Antarctica
Other Titles
남극 돔후지에 기록된 대기-표층눈 사이의 수은 교환 증거
Authors
Han, Yeongcheol
Hideaki Motoyama
Hur, Soon Do
Hong, Sung-Min
Huh, Youngsook
Subject
Geology
Keywords
Antarctic Plateau; Antarctic snow; Sntarctic snow; photochemical; total mercury
Issue Date
2014
Publisher
Springer
Citation
Han, Yeongcheol, et al. 2014. "Evidence of air-snow mercury exchange recorded in the snowpack at Dome Fuji, Antarctica". GEOSCIENCES JOURNAL, 18(1): 105-113.
Abstract
Measuring the mercury content in shallow Antarctic snow pits is useful for understanding the mercury dynamics of the Antarctic Plateau and the global mercury cycle and for interpreting ice core data. We determined the total mercury concentration (HgT) in snow samples successively collected at 5 cm intervals from two 4 m deep snow pits at Dome Fuji. The measured mercury concentration varied between 0.32 (the detection limit) and 2.93 pg g?1 (n = 160) with depth and was lower than that of summertime surface snow that was sampled simultaneously. This finding is consistent with previous observations that a bidirectional exchange of mercury between the snowpack and the atmosphere led to an increase in HgT in the surface snow during the summer. However, the contribution of the air-snow Hg exchange to the net Hg sequestration was offset by the intense re-emission of deposited mercury over the past ~50 years. Our results demonstrate that the Antarctic Plateau snowpack is a temporary reservoir of mercury rather than a permanent sink.
URI
http://repository.kopri.re.kr/handle/201206/6199
DOI
http://dx.doi.org/10.1007/s12303-013-0054-7
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